Synthesis and properties of benzoxazole-based liquid crystals containing ethynyl group

References

• Geelhaar T, Griesar K, Reckmann B. 125 years of liquid crystals—a scientific revolution in the home. Angewandte Chemie. 2013;52(34):8798–8809.
   Google Scholar
• Luo Z, Peng F, Chen H, et al. Fast-response liquid crystals for high image quality wearable displays. Opt Mater Express. 2015;5:3.
   Web of Science ®Google Scholar
• Wang L, Lin X-W, Liang X, et al. Large birefringence liquid crystal material in terahertz range. Opt Mater Express. 2012;2(10):1314–1319.
   Web of Science ®Google Scholar
• Si G, Zhao Y, Leong ESP, et al. Liquid-crystal-enabled active plasmonics: a review. Materials. 2014;7(2):1296–1317.
   PubMed Web of Science ®Google Scholar
• Yun HJ, Jo MH, Jang IW, et al. Achieving high light efficiency and fast response time in fringe field switching mode using a liquid crystal with negative dielectric anisotropy. Liq Cryst. 2012;39(9):1141–1148.
   Web of Science ®Google Scholar
• Lapanik V, Sasnouski G, Timofeev S, et al. New highly anisotropic liquid crystal materials for high-frequency applications. Liq Cryst. 2018;45(8):1242–1249.
   Web of Science ®Google Scholar
• Gallardo H, Conte G, Tuzimoto PA, et al. New luminescent liquid crystals based on 2,1,3-benzothiadiazole and bent five-memberedn-heterocyclic cores. Liq Cryst. 2012;39(9):1099–1111.
   Web of Science ®Google Scholar
• Shanker G, Nagaraj M, Kocot A, et al. Nematic phases in 1,2,4-oxadiazole-based bent-core liquid crystals: is there a ferroelectric switching? Adv Funct Mater. 2012;22(8):1671–1683.
   Web of Science ®Google Scholar
• Ha S-T, Koh T-M, Lee S-L, et al. Synthesis of new schiff base ester liquid crystals with a benzothiazole core. Liq Cryst. 2010;37(5):547–554.
   Web of Science ®Google Scholar
• Zhang L, Chen X, Zhao F, et al. Synthesis and mesomorphic properties of 2-(4′-alkoxybiphenyl-4-yl)-1h-benzimidazole derivatives. Liq Cryst. 2013;40(3):396–410.
   Web of Science ®Google Scholar
• Alderete J, Belmar J, Parra M, et al. Synthesis and mesomorphic properties of 3‐(4‐n‐alkyloxyarylaminomethylene)chroman‐2,4‐diones. Liq Cryst. 2008;35(2):157–162.
   Web of Science ®Google Scholar
• Yeap GY, Yam WS, Ito MM, et al. Synthesis and mesomorphic properties of 7‐acyloxy‐3‐(4‐acyloxyphenyl)‐4h‐1‐ benzopyran‐4‐one. Liq Cryst. 2007;34(5):649–654.
   Web of Science ®Google Scholar
• Xu Y, Chen X, Zhao F, et al. Synthesis and properties of substituted benzoxazole-terminated liquid crystals. Liq Cryst. 2013;40(2):197–215.
   Web of Science ®Google Scholar
• Majumdar KC, Ghosh T, Shankar Rao DS, et al. 2-phenylbenzoxazole-containing calamitic liquid crystals: synthesis and characterisation. Liq Cryst. 2011;38(5):625–632.
   Web of Science ®Google Scholar
• Lai CK, Liu HC, Li FJ, et al. Heterocyclic benzoxazole‐based liquid crystals. Liq Cryst. 2005;32(1):85–94.
   Web of Science ®Google Scholar
• Hu K, Xu Y, Chen P, et al. Synthesis and characterisation of benzoxazole-based liquid crystals possessing 3,5-difluorophenyl unit. Liq Cryst. 2014;41(10):1455–1464.
   Web of Science ®Google Scholar
• Chen P, Xu Y, Du W, et al. New mesogenic compounds containing a terminal-substituted benzoxazole unit. Mol Cryst Liq Cryst. 2014;592(1):44–62.
   Web of Science ®Google Scholar
• Hu K, Chen P, Weng Q, et al. Preparation and properties of lateral monofluoro-substituted benzoxazole-based mesogenic compounds. Liq Cryst. 2015;42(11):1571–1579.
   Web of Science ®Google Scholar
• Hu K, Chen P, Weng Q, et al. Improved mesophase stability of benzoxazole derivatives via dipole moment modification. Liq Cryst. 2015;42(11):1643–1653.
   Web of Science ®Google Scholar
• Shi D, Hu K, Chen P, et al. Nematic mesophase enhanced via lateral monofluorine substitution on benzoxazole-liquid crystals. Liq Cryst. 2016;43(10):1341–1350.
   Web of Science ®Google Scholar
• Shi D, Hu K, Chen P, et al. Improved nematic mesophase stability of benzoxazole-liquid crystals via modification of inter-ring twist angle of biphenyl unit. Liq Cryst. 2016;43(10):1397–1407.
   Web of Science ®Google Scholar
• Ren L, Duan L, Weng Q, et al. Synthesis and study the liquid crystalline properties of compounds containing benzoxazole core and terminal vinyl group. Liq Cryst. 2019;46(5):797–805.
   Web of Science ®Google Scholar
• Duan L, Shi D, Chen P, et al. Preparation and characterisation of laterally monofluorinated mesogenic benzimidazole-based compounds. Liq Cryst. 2017;44(11):1678–1685.
   Web of Science ®Google Scholar
• Duan L, Shi D, Chen P, et al. Preparation and properties of laterally multifluorinated benzoxazole-based nematic mesogens. Liq Cryst. 2017;44(11):1686–1694.
   Web of Science ®Google Scholar
• Weng Q, Duan L, Chen P, et al. Synthesis and mesomorphic properties of the nematic mesophase benzoxazole derivatives with big twist angle of difluoro-biphenyl unit. Liq Cryst. 2019;46(7):1013–1023.
   Web of Science ®Google Scholar
• Weng Q, Duan L, Chen P, et al. Synthesis and mesomorphic properties of benzoxazole derivatives with lateral multifluoro substituents. Liq Cryst. 2019;46(1):59–66.
   Web of Science ®Google Scholar
• Frisch MJ, Trucks G, Schlegel HB, et al. Gaussian 09 revision a.1. Gaussian inc. 2009.
   Google Scholar
• Chen R, An Z, Wang W, et al. Lateral substituent effects on uv stability of high-birefringence liquid crystals with the diaryl-diacetylene core: Dft/td-dft study. Liq Cryst. 2017;44(10):1515–1524.
   Web of Science ®Google Scholar
• Chan T-N, Lu Z, Yam W-S, et al. Non-symmetric liquid crystal dimers containing an isoflavone moiety. Liq Cryst. 2012;39(3):393–402.
   Web of Science ®Google Scholar
• Henderson PA, Niemeyer O, Imrie CT. Methylene-linked liquid crystal dimers. Liq Cryst. 2001;28(3):463–472.
   Web of Science ®Google Scholar
• Imrie CT, Taylor L. The preparation and properties of low molar mass liquid crystals possessing lateral alkyl chains. Liq Cryst. 1989;6(1):1–10.
   Web of Science ®Google Scholar
• Lee H-C, Lu Z, Henderson PA, et al. Cholesteryl-based liquid crystal dimers containing a sulfur–sulfur link in the flexible spacer. Liq Cryst. 2012;39(2):259–268.
   Web of Science ®Google Scholar
• Hu K, Weng Q, Chen R, et al. Benzoxazole-terminated liquid crystals with high birefringence and large dielectric anisotropy. Liq Cryst. 2020;1–7. DOI:10.1080/02678292.2019.1710777
   Web of Science ®Google Scholar
• Yoichitakanishi YM, Ishikawa K, Ishikawa K, et al. Development of the nematic liquid crystal compounds derived from phenyl acetylene group with large birefringence. Mol Cryst Liq Cryst. 1999;331(1):619–625.
   Google Scholar
• Jung H, Yun JH, Jeon I, et al. Acetylene-containing highly birefringent rod-type reactive liquid crystals based on 2-methylhydroquinone. Liq Cryst. 2018;45(2):279–291.
   Web of Science ®Google Scholar
• Pytlarczyk M, Kula P. Synthesis and mesomorphic properties of 4,4”-dialkynyl-2’,3’-difluoro- p-terphenyls – the influence of c≡c acetylene linking bridge. Liq Cryst. 2019;46(4):618–628.
   Web of Science ®Google Scholar
• Herman J, Harmata P, Strzeżysz O, et al. Synthesis and properties of chosen 4-butyl-phenyltolane derivatives–on the influence of core substitution on birefringence, mesomorphic and dielectric properties. J Mol Liq. 2018;267:511–519.
   Web of Science ®Google Scholar
• Hu M, An Z, Li J, et al. Tolane liquid crystals bearing fluorinated terminal group and their mid-wave infrared properties. Liq Cryst. 2014;41(12):1696–1702.
   Web of Science ®Google Scholar
• Dąbrowski R, Kula P, Herman J. High birefringence liquid crystals. Crystals. 2013;3(3):443–482.
   Web of Science ®Google Scholar
• Gauza S, Parish A, Wu ST, et al. Physical properties of laterally fluorinated isothiocyanato phenyl‐tolane liquid crystals. Liq Cryst. 2008;35(4):483–488.
   Web of Science ®Google Scholar
• Gauza S, Parish A, Wu S-T, et al. Physical properties of laterally fluorinated isothiocyanato phenyl-tolane single liquid crystals components and mixtures. Mol Cryst Liq Cryst. 2008;489(1):135–147.
   Google Scholar
• Catanescu O, Chien LC. High birefringence difluoroisothiocyanate biphenyl tolane liquid crystals. Liq Cryst. 2006;33(1):115–120.
   Web of Science ®Google Scholar
• Gauza S, Zhao Y, Le Cor T, et al. High figure-of-merit laterally fluorinated biphenyltolane -isothiocyanates. Mol Cryst Liq Cryst. 2007;479(1):169–179.
   Google Scholar
• Wen C-H, Gauza S, Wu S-T. Ultraviolet stability of liquid crystals containing cyano and isothiocyanato terminal groups. Liq Cryst. 2004;31(11):1479–1485.
   Web of Science ®Google Scholar
• Dabrowski R. New liquid crystalline materials for photonic applications. Mol Cryst Liq Cryst. 2004;421(1):1–21.
   Web of Science ®Google Scholar
• Mandle RJ, Goodby JW. Designing principles and synthesis of materials for nematic liquid crystals. In: Handbook of liquid crystals. 2nd ed. Vol. 3. Weinheim: Wiley-VCH; 2014. p. 63–101.
   Google Scholar
• Bremer M, Kirsch P, Klasen-Memmer M, et al. The TV in your pocket: development of liquid-crystal materials for the new millennium. Angewandte Chemie. 2013;52(34):8880–8896.
   Google Scholar
• Hird M. Fluorinated liquid crystals–properties and applications. Chem Soc Rev. 2007;36(12):2070–2095.
   PubMed Web of Science ®Google Scholar